Many multi-lane highways are slanted all the way across to reduce water accumulation in the median during heavy rain.
FWD cars cannot have much caster on the front wheels because they tend to torque steer if they do and caster is not adjustable on most of them (neither is camber for that matter). You can generally tell how much caster a front end has by how promptly the steering
wheel returns to center after a corner.
@Mark_888: That's an interesting story about the 1G Genesis. Most luxury RWD cars have a good bit of caster because the average owner does not want to futz with the steering
wheel which is the opposite of a track setup.
In addition to slopes on the road for drainage, there are often indentations in the road just from wear and tear that tires make in the asphalt, especially from trucks. It really just depends on how often the roads are resurfaced.
For the 2009 Genesis released in 2008 to US market, the former CEO of HMA (Hyundai Motor America), John Krafcik was part of the Genesis design team right before he became CEO, especially relating to the suspension setup for the USA model, which was done differently than for the Korean model (the
KDM version of the suspension was judged to be too soft for American tastes). Krafcik said (you can still find the video on YouTube) in an interview with
Car and Driver, that they were aiming for the 2009 Genesis to drive like an Infinity M, and specially NOT like a Lexus (this was before Lexus stiffened up their suspensions recently).
All of the suspension design work for the USA Genesis model was done in California. The early 2009 suspension was way too stiff, and the springs were overpowering the shocks. It drove perfect on a perfect road, but the slightest bumps caused problems. Driving at slow speed on even a slightly bumpy road would cause the car to porpoise up and down, especially in the rear. People were carrying sand bags in the trunk to help alleviate the problem.
Hyundai improved it moderately over the years from 2010-2011, and made a big change in 2012. I ended up changing all the shocks, struts, and rear stabilizer bar on my early 2009 with the 2010 versions, and that made a big difference (still firm, but not gyrating up and down and loosing control on the rear end), along with replacing the very stiff OEM Dunlop tires.
A few early Genesis owners traded-in or sold their car within weeks of driving it off the lot, and taking big depreciation hits. When we did test drives on perfectly flat streets the problems were not evident. Krafcik ended up getting fired, IMO partly because his vision of the Genesis was as a sports sedan, and they Korean's wanted a luxury sedan.